jQuery Forum

I'm going to guess this is simple; however, I am new to jQuery and it just seems like I can't get this to function properly.  Here's a little background:

I have two drop boxes that I need to combine the values of, then run an "*=" search to display any results.

Here's the code I have, only two lines I think should do it.  I'm just not understanding something is all.  Any help would be greatly appreciated!

1. var $result = $('#provider').val() + $('#grade').val();
2. $('tr[id*="$result"]').show();